One problem related to tank filler pipe and cap has been reported for the 2005 Mitsubishi Galant. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mitsubishi Galant based on all problems reported for the 2005 Galant.
Car stopped while driving. I took the car to the dealership and 8 hours later they said that the car was overfilled causing the filter and canister to be saturated with fuel making the vehicle stop. (although I know I did not overfill my vehicle) there is nothing in the owners manual or warranty warning not to overfill the gas tanks and that it will cause car failure while driving.